| Issue |
MATEC Web Conf.
Volume 92, 2017
Thermophysical Basis of Energy Technologies (TBET-2016)
|
|
|---|---|---|
| Article Number | 01030 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/matecconf/20179201030 | |
| Published online | 21 December 2016 | |
Heat transfer behind the backward-facing step under the influence of longitudinal pressure gradient
Kutateladze Institute of Thermophysics SB RAS, 630090, Novosibirsk, Russia
* Corresponding author: tbogatko@gmail.com
Results of an experimental and numerical study of the flow structure and turbulent heat transfer in a rectangular channel with longitudinal pressure gradient behind the backward-facing step. With the channel expansion the angle of rotation of the upper wall is 1.43; 2.86 and 4°, and with the channel convergence the rotation angle is 3; 5.7 and 7.6°. Experiments are carried out at Reynolds numbers, calculated on the step height and velocity in front of the backward-facing step, ReH = 4 000; 8 000; 12 000. It was determined, with the increase of pressure gradient the maximum value of Nusselt number increases for the converging channel and decreases for the expanding channel.
© The Authors, published by EDP Sciences, 2017
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